Fusion of two words to make a new word, intended (like most slang) to shorten the length of a conversation, they often make the person saying them sound like they have mental health issues.
I opened a copy of rolling stone we had at the counter and went to the movie review section, and noticed that Travers' column, may he spend his afterlife being eternally sodomized by production execs, had a whole section of just these blurbs, hardly even in full sentences. "Mean Girls: A delectable comedy." etc... People, presumably, simply paid him for the blurd, and he would publish it in a column of paid blurbs for the sake of the quote being published somewhere.